简单组合条件查询

这是我第一次写的组合条件查询，很丑，仅此纪念。

（黑体总是显得跌跌撞撞没自信的赶脚有没有~~）

USE [exercise]
GO
/****** Object: StoredProcedure [dbo].[procstudent] Script Date: 11/10/2013 23:09:33 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER PROCEDURE [dbo].[procstudent]
    @s int,
    @c int
 
AS
BEGIN
 SET NOCOUNT ON;
declare @sql varchar(300),
    @sex nchar(10),
 @class nchar(10)
  set @sql='select number,name,sex,class from table1 where 1=1'
IF @s=1
   begin
   set @sex='男'
   end
IF @s=2
   begin
   set @sex='女'
   end
   
IF @s<>0
   begin
   set @sql=@sql+' and sex='+''''+@sex+''''
   end
IF @c=1
   begin
   set @class='1'
   endm
IF @c=2
   begin
   set @class='2'
   end
IF @c<>0
   begin
   set @sql=@sql+' and class='+@class
   end
   print @sql
   exec(@sql)
END